Fees paid to related party for termination of advisory agreement.

No definition available.

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- Definition

Prepaid advisory fees written off in connection with the termination of a contract.

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

The month and year (YYYY-MM) that the dividend to be paid was declared.

+ References

+ Details

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

The loss recognized on termination of a contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 912
-SubTopic 275
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=51673126&loc=d3e54681-109401

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- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Related-Party Transactions - Additional Information (Detail) - USD ($)																			1 Months Ended						12 Months Ended
	Feb. 22, 2016	Jan. 22, 2016	Jan. 05, 2016	Oct. 06, 2015	Sep. 16, 2015	Jul. 01, 2015	Jun. 10, 2015	Apr. 01, 2015	Mar. 03, 2015	Jan. 22, 2015	Jan. 05, 2015	Oct. 06, 2014	Jul. 01, 2014	Apr. 01, 2014	Jan. 03, 2014	Oct. 01, 2013	Jul. 01, 2013	Apr. 24, 2013	Sep. 30, 2014	May. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Cash dividends declared per share					$ 0.21		$ 0.21		$ 0.21		$ 0.21														$ 0.84	$ 0.62	$ 0.60
Cash dividends record date					Sep. 29, 2015		Jun. 22, 2015		Mar. 13, 2015		Jan. 13, 2015
Cash dividends payable date					Oct. 06, 2015		Jul. 01, 2015		Apr. 01, 2015		Jan. 22, 2015
Dividends paid to stockholders																									$ 72,318,000	$ 72,113,000	$ 36,175,000
Termination of advisory agreement																									$ 0	$ 0	$ 50,072,000
Q1 2014 Declaration [Member]
Related Party Transaction [Line Items]
Cash dividends declared per share																					$ 0.20					$ 0.20
Cash dividends record date																									Mar. 20, 2014	Mar. 20, 2014
Cash dividends payable date																									Apr. 01, 2014	Apr. 01, 2014
Cash dividends declare date																									2014-03
Q2 2014 Declaration [Member]
Related Party Transaction [Line Items]
Cash dividends declared per share																				$ 0.21						$ 0.21
Cash dividends record date																									Jun. 20, 2014	Jun. 20, 2014
Cash dividends payable date																									Jul. 01, 2014	Jul. 01, 2014
Cash dividends declare date																									2014-05
Q3 2014 Declaration [Member]
Related Party Transaction [Line Items]
Cash dividends declared per share																			$ 0.21							$ 0.21
Cash dividends record date																									Sep. 29, 2014	Sep. 29, 2014
Cash dividends payable date																									Oct. 06, 2014	Oct. 06, 2014
Cash dividends declare date																									2014-09
Q2 2013 Declaration [Member]
Related Party Transaction [Line Items]
Cash dividends declared per share																								$ 0.20			$ 0.20
Cash dividends record date																									Jun. 20, 2013		Jun. 20, 2013
Cash dividends payable date																									Jul. 01, 2013		Jul. 01, 2013
Cash dividends declare date																									2013-06
Q3 2013 Declaration [Member]
Related Party Transaction [Line Items]
Cash dividends declared per share																							$ 0.20				$ 0.20
Cash dividends record date																									Sep. 20, 2013		Sep. 20, 2013
Cash dividends payable date																									Oct. 01, 2013		Oct. 01, 2013
Cash dividends declare date																									2013-09
Q4 2013 Declaration [Member]
Related Party Transaction [Line Items]
Cash dividends declared per share																						$ 0.20					$ 0.20
Cash dividends record date																									Dec. 20, 2013		Dec. 20, 2013
Cash dividends payable date																									Jan. 03, 2014		Jan. 03, 2014
Cash dividends declare date																									2013-12
Subsequent Events [Member]
Related Party Transaction [Line Items]
Cash dividends declared per share	$ 0.21		$ 0.21
Cash dividends record date	Mar. 14, 2016		Jan. 15, 2016
Cash dividends payable date	Apr. 01, 2016		Jan. 22, 2016
Blackstone and Affiliates [Member]
Related Party Transaction [Line Items]
Dividends paid to stockholders				$ 4,095,000		$ 4,095,000		$ 4,095,000		$ 4,095,000					$ 7,849,000	$ 11,749,000	$ 11,749,000
Advisory Agreement, fees																											$ 2,799,000
Termination fee paid																		$ 46,300,000							$ 0	$ 0
Write-off of 2013 prepaid advisory fee																		$ 3,772,000
Termination of advisory agreement																											$ 50,072,000
Blackstone and Affiliates [Member] \| Q1 2014 Declaration [Member]
Related Party Transaction [Line Items]
Dividends paid to stockholders														$ 7,849,000
Blackstone and Affiliates [Member] \| Q2 2014 Declaration [Member]
Related Party Transaction [Line Items]
Dividends paid to stockholders													$ 4,252,000
Blackstone and Affiliates [Member] \| Q3 2014 Declaration [Member]
Related Party Transaction [Line Items]
Dividends paid to stockholders												$ 4,095,000
Blackstone and Affiliates [Member] \| Subsequent Events [Member]
Related Party Transaction [Line Items]
Dividends paid to stockholders		$ 4,095,000
Blackstone and Affiliates [Member] \| Term B-2 Loans [Member]
Related Party Transaction [Line Items]
Debt instrument, balance																									77,000,000	87,000,000
Blackstone and Affiliates [Member] \| Term B-3 Loans [Member]
Related Party Transaction [Line Items]
Debt instrument, balance																									$ 9,000,000
Blackstone and Affiliates [Member] \| Senior Notes [Member]
Related Party Transaction [Line Items]
Debt instrument, balance																										$ 65,000,000